CenA from Cellulomonas fimi is a β-1,4-endoglucanase that binds tightly to cellulse X-ray-scattering analyses show that the enzyme is tadpole-shaped: the previously identified catalytic and cellulose-binding domains comprise the head and tail respectively. It appears that this structural and functional organization is common to several cellulases from bacteria and fungi.
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Yablonsky M. D., 1988, Biochemistry and genetics of cellulose degradation, P249